The soot means the air/fuel ratio is too rich. IAW, you have too much fuel and not enough air to combust all the fuel efficiently. The goal is a strong blue flame with no more than a slight trace of yellow on the flame tips. Could either be too much propane for the turnkey fryer or not enough air getting into and thru the burner.
Possible causes of too much gas are:
1. Regulator is set at too high a pressure. You should be able to dial the regulator back on a turkey fryer to see if that gets you back to a blue flame.
2. You have the wrong oriface on where the gas hose enters the burner. If you unscrew that you'll find a fitting with what looks like just a tiny hole in the end where propane enters the burner. A natural gas oriface is bigger than a propane one and could be the cause.
3. You have the wrong regulator for the burner. One with a higher pressure output than the burner can support could supply too much fuel. Again dial the regulator back to almost closed and adjust up from there.
Possible causes of not enough air are:
1. Air baffle not adjusted to open enough. If it's not already set wide open start there and work back to adjust the flame.
2. Something is plugging up the burner body. Spider and wasps like to build nests inside these if left outside. Take the air baffle off and maybe flame spreader on the other end of the burner and look thru both ends with a good light.
3. A bad burner casting. These burners are really cheap rough castings made using the crudest methods. Look inside the burner the same way as 2 to see if there is a malformed casting or plugged with slag. It should have a round consistant shape that tapers in somewhere in the middle and opens up again toward the end. Anything else is junk.
Let us know what you find.
Originally Posted by Brewham
I'm using a turkey fryer to cook the wort. Works great and keeps the Mrs. happy because I brew outside. Problem is, the pot gets a lot of black soot on the bottom and it is a mess to clean up. I have tried adjusting the burner but it doesn't make much of a difference. I still have a lot of yellow flame
Any ideas on how to prevent the soot?